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Finding the Fourth Proportional to 5,271.22, 7,906 and 1,761.29

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Solution

The fourth proportional to 5,271.22, 7,906 and 1,761.29 is: 2,641.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,271.22 : 7,906 = 1,761.29 : x
  2. Step 2: Convert to fraction form
    5,271.22/7,906 = 1,761.29/x
  3. Step 3: Cross multiply
    5,271.22x = 7,906 × 1,761.29
  4. Step 4: Simplify right side
    5,271.22x = 13,924,758.74
  5. Step 5: Solve for x
    x = 13,924,758.74/5,271.22
  6. Step 6: Final answer
    x = 2,641.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.